A、He forgot it. B、He was away from the company. C、He was ill. D、He was at work. D对话中，女士询问男士为什么昨晚不去开会，男士回答说他当时正忙着工作。由此可见，D项为正确答案。

M: Doctor, I’m wondering how to take the medicine.
W: Three times a day after meals.
Q: Where does this dialogue probably take place?

W: Why didn’t you go to the meeting last night?
M: I was busy with my work.
Q: Why didn’t the man go to the meeting?